4-Methyl-anilinium 4-hy-droxy-benzene-sulfonate

In the crystal of the title molecular salt, C7H10N(+)·C6H5O4S(-), the benzene-sulfonate units are linked through phenol-sulfonate O-H⋯O hydrogen bonds, forming chains along the c-axis direction. These chains are linked via N-H⋯O hydrogen bonds involving two of the three H atoms of the ammonium group of the 4-methyl-anilium cation, giving rise to two-dimensional networks parallel to the bc plane which are further connected through an additional N-H⋯O inter-action in which the third ammonium H atom is involved, generating a three-dimensional network.